The PRZ, the Potential Reversal Area, is an area where 3 or more Fibonacci numbers converge, and where the harmonic pattern completes. It's the D point on a harmonic pattern and where price has a high probability of reversing.
In the example below, the yellow rectangle is the PRZ where the Fibonacci projections (yellow and blue horizontal lines) for this pattern converge.
In the case of the Gartley pattern the key Fibonacci projections to converge in the PRZ are the 0.786 XA, 1.27 BC, 1.618 BC and the level where AB=CD.
Other pages in this series on Harmonics Basics are:
Learn how Adaptive Position Sizing can grow your account balance - exponentially.
Real-time harmonic alerts to pc and email. Free harmonics education videos and harmonic software. Harmonic traders chat room.
Over 15 hours of educational lessons narrated and presented by the originator of Harmonic Trading, Scott Carney.